diff options
Diffstat (limited to 'plat/imx/common/include/imx_wdog.h')
-rw-r--r-- | plat/imx/common/include/imx_wdog.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/plat/imx/common/include/imx_wdog.h b/plat/imx/common/include/imx_wdog.h new file mode 100644 index 0000000000..8033e6268d --- /dev/null +++ b/plat/imx/common/include/imx_wdog.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __IMX_WDOG_H__ +#define __IMX_WDOG_H__ + +#include <arch.h> +#include <stdint.h> + +struct wdog_regs { + uint16_t wcr; + uint16_t wsr; + uint16_t wrsr; + uint16_t wicr; + uint16_t wmcr; +}; + +/* WCR bits */ +#define WCR_WDZST BIT(0) +#define WCR_WDBG BIT(1) +#define WCR_WDE BIT(2) +#define WCR_WDT BIT(3) +#define WCR_SRS BIT(4) +#define WCR_WDA BIT(5) +#define WCR_SRE BIT(6) +#define WCR_WDW BIT(7) +#define WCR_WT(x) ((x) << 8) + +/* WSR bits */ +#define WSR_FIRST 0x5555 +#define WSR_SECOND 0xAAAA + +/* WRSR bits */ +#define WRSR_SFTW BIT(0) +#define WRSR_TOUT BIT(1) +#define WRSR_POR BIT(4) + +/* WICR bits */ +static inline int wicr_calc_wict(int sec, int half_sec) +{ + int wict_bits; + + /* Represents WICR bits 7 - 0 */ + wict_bits = ((sec << 1) | (half_sec ? 1 : 0)); + + return wict_bits; +} + +#define WICR_WTIS BIT(14) +#define WICR_WIE BIT(15) + +/* WMCR bits */ +#define WMCR_PDE BIT(0) + +/* External facing API */ +void imx_wdog_init(void); + +#endif /* __IMX_WDOG_H__ */ |